A.O. Smith HSE-HNS User manual

Water Heater
HSE-HNS 50, 60, 80 Litres
User Guide
Size: 210mm (H) x 148mm (W)
Part No.: 323871-000_R0
Approved on: 30-05-2012
4Years 7Years
Extended
Warranty on
Heating Elements*
Warranty on ®
Blue Diamond
Glass-Lined Tank
Touch Control
Panel
Adaptive Energy-
Saving System
Glass Coated & Gilded
Heating Elements
[24kt Gold]
Programmable
Timer
* Conditions Apply
Quick Standard
Heat
Modes
MAX
kWh
Hot Water
Quantity
Override
Energy
meter
Timer3
0
C
Timer 2Timer 1Timer 3
MAX Low
Timer ON
Timer OFF
0
C
Clock/
Timers
HSE-HNS: Available in 50, 60 & 80 litre capacities
Override Heat
Modes
MAX Energy
meter
Timer 3
Clock/
Timers
Quick Standard
Heat
Modes
MAX
kWh
Hot Water
Quantity
Override
Energy
meter
Timer3
0C:
8888
Timer 2Timer 1Timer 3
MAX Low
Timer ON
Timer OFF
0C
Clock/
Timers

About A. O. Smith
A. O. Smith India Water Heating Private Limited was established in 2006. Since this time, the
A. O. Smith team has conducted numerous focus group studies and spent an endless number
of research hours determining what India wanted in a water heater. Backed by 75 years of
proven technological advances, A. O. Smith India has created a stylish design with features
demanded by the Indian consumer.
The A. O. Smith plant with manufacturing facilities spread over 76,000 sq.ft. is located on
20 acres, just outside Bengaluru, in the KIADB Industrial Area, Harohalli. The India operations is
th
the 16 A. O. Smith manufacturing facility worldwide. A. O. Smith's India plant has extensive
engineering and technical resources and has the latest technologies incorporated. A. O. Smith is
the first and only manufacturer to invest in and produce glass lined water heaters in India.
Today, A. O. Smith Water Products Company is one of the largest water heater manufacturer in
the world, is a global leader in innovative technology and energy efficient solutions.
Congratulations!
And welcome to the A. O. Smith family.
We would like to thank you for the trust you have shown in choosing an A. O. Smith water
heater. You can be sure it will live up to your expectations. Thousands of delighted users the
world over trust A. O. Smith water heaters for their families. This user guide will introduce you to
your water heater. Follow the instructions carefully and look forward to enjoying long years of
trouble-free service.
A. O. Smith is a company known for its innovative technologies and energy-efficient solutions.
®
Ours are the only water heaters with the Blue Diamond Glass lining for the inner container of
the water heater. This cutting edge technology prevents sediment and scaling, fights corrosion
and extends the life of your water heater. We also offer you an exciting range of colour options
for the front panel of your water heater. Choose the one that matches your bathroom décor
best.
Our customer-centric approach manifests itself in many other ways too. A. O. Smith is the first
water heater company which gives you a dedicated Toll Free Customer Care Number. If you need
any information or assistance with your water heater, just call us from any phone, anywhere in
the country to our Toll Free Customer Care No. 1.800.103.2468.
Or
Factory Address:
A. O. Smith India Water Heating Private Limited
Plot No. 300, Phase-2, KIADB Industrial Area, Harohalli, Kanakapura Taluk,
Ramanagara District - 562 112, Karnataka, India.

Contents
User instructions.........................................................................................1
Specifications..............................................................................................3
Key features ................................................................................................4
Electronic features......................................................................................5
Installation instructions .............................................................................6
Directions for use .......................................................................................10
Maintenance instructions ..........................................................................13
Troubleshooting..........................................................................................14
Circuit diagram ...........................................................................................15
Warranty .....................................................................................................16
Jurisdiction..................................................................................................17
Warranty Card.............................................................................................18
Service and Maintenance ...........................................................................19
What's in the box?
Electric
Water Heater
Wall Mounting
Accessories
Remote Accessories
& Battery
Drain Pipe
User Guide
Quick Standard
M
Hoedaets
MAX
kWh
HQoutaW
ntaitteyr
Override
Emneetregry
Timer3
0
C
Timer2Timer1Timer3
MAX Low
TimerON
TimerOFF
0
C
T
Cimloc
ekrs
/
Override M
Hoedaets
MAX E
m
neetregry
Timer3
T
Cilmoc
ekrs
/
Relief Valve
Water Heater
HSE-HNS 50, 60, 80 Litres
User Guide
4
Years
7
Years
Extended
Warrantyon
HeatingElements*
Warrantyon
®
BlueDiamond
Glass-LinedTank
TouchControl
Panel
AdaptiveEnergy-
SavingSystem
Glass
Coated
&Gilded
HeatingElements
[24ktGold]
Programmable
Timer
*Conditions Apply
QuickStandard
Heat
Modes
MAX
kWh
HotWater
Quantity
Override
Energy
meter
Timer3
0
C
Timer2Timer1
Timer3
MAX Low
TimerON
TimerOFF
0
C
Clock/
Timers
HSE-HNS:Available in 50, 60 & 80 litre capacities
Override Heat
Modes
MAX Energy
meter
Timer3
Clock/
Timers
QuickStandard
Heat
Modes
MAX
kWh
HotWater
Quantity
Override
Energy
meter
Timer3
0
C
:
8
888
Timer2
Timer1
Timer3
MAX Low
TimerON
TimerOFF
0
C
Clock/
Timers

User Instructions
Please read the instructions carefully before the installation or operation of this HSE-HNS
heater (henceforth the HSE-HNS water heater will be referred as water heater). This user guide
is meant for your future reference.
?Only the company recommended professional installers will install the A. O. Smith water
heater for you. In case of improper installation of the water heater by unauthorised
personnel, A. O. Smith will not be responsible.
?If the users install the water heater manufactured by our company by themselves or do it
by using the self prepared installation materials, our company will not be liable for any
adverse effects on normal operation and service performance of the water heater,
including but not limited to pipeline leakage, fall or improper installation thereof and
harmful effects on or damage to the body of the water heater as well as all losses
incurred thereby.
?After installation and operation of the water heater, users should inspect the water
heater regularly and make necessary maintenance according to the service conditions.
If any abnormality occurs, stop the operation of the water heater immediately and dial
our Customer Care No. 1.800.103.2468 for repair to ensure the normal, safe and reliable
operation of the water heater.
?The anode rod is a consumable part and should be examined and replaced at regular
intervals. It is suggested that the longevity is for 2 to 3 years. Consumers should register
and replace the anode rod by dialling our Customer Care No. 1.800.103.2468. In this
way, the service life of the water heater will be extended effectively.
?Prior to any maintenance or repair of the water heater, please ensure to cut off the
power. Those installers who are not recommended by A. O. Smith should not adjust or
repair the water heater.
?In case the water heater is subject to dry heating, the generated steam or burning water
might lead to serious scald. Therefore, it is necessary to fill the water heater with water. If
dry heating occurs, cut off the power and water supply at once, stop the operation, dial
the Customer Care No. 1.800.103.2468 and carry out inspection or repair by our
company recommended professional installers.
?This water heater is provided with power cord, if any damage is observed before
installation, contact our Customer Care No. 1.800.103.2468. (Primary components of the
water heater are protected by insulation layer and thermal protective coating so that the
users can operate with ease).
?This water heater is equipped with relief valve. For the sake of safe operation, the
mounting position of the valve should not be changed without permission and the
blockage of valve outlet is strictly prohibited. The discharge pipe must be provided for
the relief valve, mounted downwards continuously and should not be knotted in the
middle. The discharge pipe shall be directly connected to the floor drain.
?Before installing the water heater, confirm that the power of water heater matches its
electric meter capacity and power wire.
?This water heater should be earthed reliably. It is prohibited to connect the earth wire to
neutral wire or tap water pipe.
?If the temperature has been set and the relief valve has been installed by the
manufacturer, for the sake of safe operation, users may not alter the installation location
or block its outlet without permission.
?Hot water above 50°C could result in scald. Before using hot water, please pay attention
to testing water temperature by hand and use water at an appropriate temperature by
mixing cold water.
water
1

?
should not be used for drinking.
?A special branch circuit should be used for the water heater. Examine whether the electric
meter, circuit breaker and diameter of electric wire meets the requirement for rated
current of the water heater. If necessary, a qualified electrician should examine.
?This water heater should be installed at a dry place. Please never insert or pull out the
power plug with a wet hand or else electric shock, injury, etc. may be caused.
?Do not use the damaged electric wire aged, loose and unfixed power socket otherwise,
electric shock, short circuit, fire, etc. will be caused. Make sure that the power plug is
connected with the socket firmly.
A. O. Smith India Water Heating Pvt. Ltd. reserves all the rights to interpret the above
mentioned provisions.
Water discharged from the water heater (including high temperature heating water)
Caution: Failure to follow these instructions may lead to risk of fire and could cause
property damage and or personal injury or death.
Warning: Power-on and operation will be permitted only after reliable grounding is
provided for the power socket. The water heater is strictly forbidden for use in
circumstances where no safe grounding or well-drained floor drain is provided. In
the installation area, it should be ensured that the water leakage of the water
heater or joints may not cause damage to the articles in adjacent region or lower
portion of the building.
2
Note: A. O. Smith reserves the right to amend or modify the specifications and features at
any time, as and when required without any prior notification.

Specifications
3
Caution: *Relief valve has been factory fit with the water heater and set at 0.8 MPa
(8 Bar) rated pressure.
Warning: Do not tamper or detach the safety valve from the water heater.
Dimensions
Model A(mm) A1(mm) B(mm) B1(mm) C(mm)
HSE-HNS-050 850 376 434 195 427
HSE-HNS-060 717 305 483 230 483
HSE-HNS-080 876 405 483 230 483
Fig. 1
Model HSE-HNS HSE-HNS HSE-HNS
-050 -060 -080
Rated volume [L] 50 60 80
Rated AC voltage [V]/Rated frequency [Hz] ~220/50 ~220/50 ~220/50
Rated input power
Quick power heating mode [W] 3000 3000 3000
Standard power heating mode [W] 3000/2000 3000/2000 3000/2000
Low power heating mode [W] 2000 2000 2000
Net weight [kg] 22 25 29
Reheating time for 35°C [3kW in min] 39 47 62
[2kW in min] 58 70 93
Temperature range [°C] 35-75 35-75 35-75
Rated water pressure N/cm 80 80 80
Water head (metres) 80 80 80
Inlet/Outlet Connection [Inch] BSP ½ BSP ½ BSP ½
2
B1
B
C
Hot water (outlet) Cold water (inlet)
Relief valve*
A1 100
A
Quick Standard
Heat
Modes
MAX
kWh
Hot Water
Quantity
Override
Energy
meter
Timer3
0C
:
88 88
Timer 2Timer1Timer 3
MAX Low
Timer ON
Timer OFF
0C
Clock/
Timers

4
Key Features
This water heater comes with a special glass lined inner tank. This lining offers
protection against the tank corrosion and increases life of the water heater,
which is achieved through a specialised fusion process. The tanks are designed
to pass 1,00,000 cycle fatigue test. This makes it one of the best tank
resistance to rust and scaling.
Glass lined
High efficiency energy-saving thermal insulating layer
A polyurethane foam insulating layer without freon is used, which provides a
good insulating property and reduces heat loss effectively.
Relief valve
A relief valve (refer to Fig.1) for the water heater is provided and set while
leaving the factory and it is not adjustable by the user. The relief valve must be
installed at the inlet pipe of the water heater. This valve will relieve pressure
automatically while the piping system exceeds the rated pressure.
This water heater employs a high temperature limit protection switch. In case
any fault occurs and the water temperature exceeds the highest preset
temperature (93°C), then switch rapidly cuts off the live line and neutral line
simultaneously to guarantee safety.
High temperature limit protection switch
A strong steel core anode rod is used for protecting the inner tank. It greatly
prolongs the service life of the water heater.
Anode protection
Dual heating elements: Glass coated and Gilded [24kt Gold]
This water heater has dual heating elements.
gilded [24 karat gold], which minimises and prevents scale formation on the
surface of the element. Gilded element does major portion of the heating in
the water heater. The 3kW heating element is a glass coated which is used for
instant hot water.
The 2kW heating element is a
Touch control panel is used for easy operation of this water heater. It displays
electrical energy consumption, set temperature, actual temperature, timer etc.
The user can select the set temperature within the range of 35°C - 75°C.
Touch control panel
Quick Standard
Heat
Modes
MAX
kWh
HotWater
Quantity
Override
Energy
meter
Timer3
0C:
8888
Timer2Timer1Timer3
MAX Low
TimerON
TimerOFF
0C
Clock/
Timers

5
Users can select instant heating by pressing "override" key at all times and the
water heater starts electrical heating immediately to reach the preset
temperature.
Instant
Display of Hot Water Amount
This water heater has a function of displaying the amount of hot water
available. Five lighting block displays the hot water distribution of different
levels in the inner tank of the water heater.
Electronic Features
Intelligent Dormancy
If no operation is performed within 3 minutes, the enters into
a dormant state.
water heater
With our careful manufacturing and strict quality control, we assure you the
best quality and long life; is backed by 7 years warranty on the tank and
2 years warranty on the whole unit.
Year
7s
Warranty
This has unique AES feature which adopts the heating cycles to
the water utilisation habit of the user. This enables the water heater to switch
on automatically at required time, hence saving energy by minimising thermal
losses.
water heater
AES [adaptive energy-saving system] Function
Power-off Memory Function
This can retain the set information for 72 hours, even in power
off condition.
water heater
This water heater has timer functionality which enables the water heater to
switch on automatically in energy saving mode at preset times of the day, as
required by the user.
Programmable Timer

Installation Instructions
Caution:
• Once the mounting, plumbing, power connection and water filling is done, then only
the power supply should be given. The steps need to be followed as per the user
guide.
• This water heater is heavy, hence will require at least 2 persons to carry and install,
otherwise it may cause injury.
• Please carry the water heater in the ex-factory state and do not tilt over 45°C angle or
vertical placing.
• Disassembly and assembly by users is prohibited.
Mounting
This water heater should be installed at a location that is close to power socket, floor drain and
water utilisation point. As the outlet of the relief valve might discharge water during the
operation of the water heater, therefore the floor drain should be provided near the water
heater. In the installation area, it should be ensured that the water leakage of the water heater
or pipeline joints should not cause damage to the articles in adjacent region or lower layer of
the building. While installing the water heater, please be sure for mounting the water inlet and
outlet pipes at the bottom of the water heater.
Vertical installation of the water heater is strictly prohibited.
Mounting procedures and precautions
The installing surface must be capable of supporting at least four times the weight of the water
heater when filled with water. If the water heater is not installed on the bearing wall or is
mounted on hollow brick wall, corresponding protective measures must be provided, for
example supporting rack, through-wall screw, mounting of back plate, etc.
Prior to confirming the positions of bolt holes, retain at least 300 mm space on the right side of
the water heater, to open the side cover for repair.
• If the water heater is embedded into a gusset plate, the plate on the right side should be
moveable for convenience to dismantle the end cover for repair and maintenance.
• The water heater should not be located outdoors or in an area subject to freezing
environment. If freezing occurs, the container and water pipe will break, causing scald or
leakage.
Caution:
• water heater
• The water heater should be hung until the accessories are fixed firmly or else the
heater may fall off and serious injury accident might be caused.
• The maximum power of this water heater is 3000 W, hence a single dedicated power
supply circuit is proposed, the core area of electric supply wire should not be less than
2
2.5 mm .
This should be installed with the fixing accessories provided.
6
Caution: Hot water over 50°C will cause scald. In order to protect you and your family,
especially the safety of children, if you set the temperature exceeding 50°C, please
take care.

Mounting guidelines
Drill two holes in 90 mm depth at least by using an electric impact drill with a ø10 mm bit.
The holes must be in level. Space between the two holes should be as shown in Fig. 2 based on
the model.
Fig. 2 Mounting distance of hangers
HSE-HNS-060
198mm 375mm
HSE-HNS-080
375mm
HSE-HNS-050
Fig. 3 Installation of mounting bracket Fig. 4 Mounting of the water heater
Wall
Fig. 5 Installation of mounting bracket
Caution: The provided mounting accessories can only be used for solid wall, as shown in
Fig. 5. Improper installation may cause the water heater to fall down.
Caution:
• Nylon expansion tube must pass through the hole of the mounting bracket first,
and then be inserted into the drilled holes.
• It is necessary to use special inner hexagon spanner to fasten the bolts into the
nylon expansion tubes, no other tools are permitted. During fastening of the
screws, ensure that the counter sunk head of the screw is not excessively tightened,
which may damage the nylon expansion tubes.
Proper Improper
7
• Fix the hangers on the wall by using the inner hexagon spanner and expansion screws
(Fig. 3).
• Insert the square holes on the upper of supporting rack at the back of the water heater
into the hanger of the hanging plate, move down the water heater to ensure the square
holes against the root of the hanger. Confirm the reliable fixing of the water heater
(Fig. 4).